1 /* 2 * Copyright (c) 1982, 1986, 1990 Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)dcareg.h 7.1 (Berkeley) 05/08/90 8 */ 9 10 struct dcadevice { 11 u_char dca_pad0; 12 volatile u_char dca_irid; 13 volatile short dca_ic; 14 volatile short dca_ocbrc; 15 volatile short dca_lcsm; 16 short dca_pad1[4]; 17 u_char dca_pad2; 18 volatile u_char dca_data; 19 volatile short dca_ier; 20 volatile short dca_iir; 21 volatile short dca_cfcr; 22 volatile short dca_mcr; 23 volatile short dca_lsr; 24 u_char dca_pad3; 25 volatile u_char dca_msr; 26 }; 27 28 /* interface reset/id */ 29 #define DCAID0 0x02 30 #define DCAREMID0 0x82 31 #define DCAID1 0x42 32 #define DCAREMID1 0xC2 33 34 /* interrupt control */ 35 #define DCAIPL(x) ((((x) >> 4) & 3) + 3) 36 #define IC_IR 0x40 37 #define IC_IE 0x80 38 39 /* 16 bit baud rate divisor (lower byte in dca_data, upper in dca_ier) */ 40 #define DCABRD(x) (153600 / (x)) 41 42 /* interrupt enable register */ 43 #define IER_ERXRDY 0x1 44 #define IER_ETXRDY 0x2 45 #define IER_ERLS 0x4 46 #define IER_EMSC 0x8 47 48 /* interrupt identification register */ 49 #define IIR_NOPEND 0x1 50 #define IIR_IMASK 0x6 51 #define IIR_RLS 6 52 #define IIR_RXRDY 4 53 #define IIR_TXRDY 2 54 #define IIR_MLSC 0 55 56 /* character format control register */ 57 #define CFCR_DLAB 0x80 58 #define CFCR_SBREAK 0x40 59 #define CFCR_PZERO 0x30 60 #define CFCR_PONE 0x20 61 #define CFCR_PEVEN 0x10 62 #define CFCR_PODD 0x00 63 #define CFCR_PENAB 0x08 64 #define CFCR_STOPB 0x04 65 #define CFCR_8BITS 0x03 66 #define CFCR_7BITS 0x02 67 #define CFCR_6BITS 0x01 68 #define CFCR_5BITS 0x00 69 70 /* modem control register */ 71 #define MCR_LOOPBACK 0x10 72 #define MCR_SRTS 0x08 73 #define MCR_DRS 0x04 74 #define MCR_RTS 0x02 75 #define MCR_DTR 0x01 76 77 /* line status register */ 78 #define LSR_TSRE 0x40 79 #define LSR_TXRDY 0x20 80 #define LSR_BI 0x10 81 #define LSR_FE 0x08 82 #define LSR_PE 0x04 83 #define LSR_OE 0x02 84 #define LSR_RXRDY 0x01 85 86 /* modem status register */ 87 #define MSR_DCD 0x80 88 #define MSR_RI 0x40 89 #define MSR_DSR 0x20 90 #define MSR_CTS 0x10 91 #define MSR_CCD 0x08 92 #define MSR_TERI 0x04 93 #define MSR_DDSR 0x02 94 #define MSR_CCTS 0x01 95 96 /* 97 * WARNING: Serial console is assumed to be at SC9 98 * and CONUNIT must be 0. 99 */ 100 #define CONADDR ((struct dcadevice *)(IOV(EXTIOBASE + (9 * IOCARDSIZE)))) 101 #define CONUNIT (0) 102